JPH0211412Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention is used to apply masking tape to predetermined areas to create non-painted areas when painting various workpieces, such as vehicle bumpers. The present invention relates to a hand-held masking device used for.

(Prior art) Conventionally, as this type of device, for example,
As seen in No. 41942, there is an upper winding frame that holds the masking tape in a freely unwound manner on a frame having an operation handle, and a lower winding frame that sticks the masking tape drawn out from the winding frame onto a workpiece. Types that include a pressing roller or other pressing means are known.

(Problems to be Solved by the Invention) In the conventional masking device described above, it was not possible to simultaneously apply masking tape to both upwardly inclined sides of the protrusion formed on the workpiece. However, if a pair of the above-mentioned devices is provided corresponding to both sides of the protrusion, and the device is moved forward while pressing downward along the protrusion, the masking tape can be applied to both sides of the protrusion at the same time. It is possible to do so. However, in this case, it is assumed that the masking tape will gradually shift downward from the side surface due to the downward pressing force.

The present invention solves the above-mentioned problems, prevents the masking tape from shifting downward from the side surface when it is attached to the side surface of the protrusion, and allows the masking tape to be applied uniformly over the entire length of the side surface. The purpose is to provide a device that can be attached.

(Means for Solving the Problem) In order to achieve the above object, the present invention is a device for pasting masking tape on both upwardly inclined sides of a protrusion formed on a workpiece, which has an operation handle. A masking mechanism consisting of an upper winding frame for holding the masking tape in a frame having a frame having a frame having a frame and a lower pressure roll for pressing the masking tape drawn out from the winding frame onto the workpiece is mounted on both sides of the masking mechanism. A pair of corresponding left and right main rolls are provided, the press rolls of each masking mechanism are pivotally supported on the frame so as to face the ridges on each side of the protrusion, and a main roll on the lower side of each side of the protrusion. and an auxiliary roll formed in a shape having a circumferential surface portion facing the half portion and pivotally supported by the frame at a position rearward from the main roll, the main roll having a circumferential surface portion facing the ridge portion. It is characterized in that it is constituted by a cylindrical roll made of an elastic body that is elastically deformed so as to come into contact with the upper surface of the protruding strip, from the side edge portion to approximately half of the upper side of the side surface of the protruding strip.

(Function) When applying masking tape to both sides of the protrusion, first, the masking tape is applied simultaneously to the side edge of the upper surface of the protrusion and approximately half of the upper side of the side surface using the front main roll. Next, the remaining lower half is pasted using a rear auxiliary roll.

Therefore, since the masking tape is first applied to the side edge of the top surface and approximately the upper half of the side surface by the main roll, it does not slip downward to the side surface, and the masking tape is applied by the auxiliary roll. By affixing the lower half of the side surface, where pressing force tends to be insufficient, separately from the upper half, the lower half can also be affixed with sufficient pressing force. Can be done.

Furthermore, by configuring the main roll with an elastic body,
By the time it comes into contact with the circumferential surface of the main roll and is pressed against the workpiece, the main roll gradually takes on a shape corresponding to the corner formed by the side edge of the top surface and the upper half of the side surface due to the elastic deformation of the main roll. It can be bent and attached accurately to the corner.

(Example) An example of the present invention will be explained with reference to the attached drawings.

In the drawing, 1 is a frame that extends longitudinally in the front and back direction,
Reference numeral 2 indicates an operation handle for hand-held operation on the upper surface of the middle part, and on the frame 1 there is an upper winding frame 4 that holds the masking tape 3 in a freely unwound manner, and the tape that is drawn out from the winding frame 4. The masking mechanism A consists of a lower pressure roll 5 that presses the material 3 onto the workpiece a, one in the center at the front and two on both left and right sides at the rear.
I tried to prepare for each individual.

In other words, the frame 1 is provided with the upper winding frame 4 and the lower pressing roll 5 at the center of the front, and applies the tape 3 to one in the center, and to each side at the rear. It is equipped with the upper winding frame 4 and the lower pressure roll 5 to apply the tape 3 to one piece on each side. In this case, the workpiece a is rolled in the longitudinal direction as shown in FIG. The work piece a is provided with an extending protrusion b, and thus the workpiece a is arranged such that each tape 3 is applied to the upper surface of the protrusion b and to each of its left and right side surfaces c.

More specifically, the pressure roll 5 at the center of the front is provided with a pair of guide rolls 6, 6 at both ends thereof guided along the protrusion b, as clearly shown in FIGS. 5 and 6, for example. A pair of left and right guide rolls 9, 9 are supported behind it by a pair of left and right swing arms 7, 7, and are movable upwardly against respective springs 8, 8.
In this manner, the press roll 5 is guided by the rolls 6, 6 and the rolls 9, 9 and moved along the ridge b during its travel.

According to the present invention, each side c of the protrusion b is formed into an upwardly inclined surface, as clearly shown in FIG. The press rolls 5 on each side were configured as follows in order to press the side surface c substantially evenly.

That is, as clearly shown in FIG. 7, for example, the press roll 5 faces the ridges on each side of the protrusion b, and due to the biting of the ridges, the peripheral surface part is separated from the upper surface side edge of the protrusion b. It consists of a main roll consisting of a cylindrical roll made of rubber or other elastic material that is elastically deformed so as to come into contact with approximately the upper half of the side surface c, and furthermore, a side surface of the protrusion b is attached to the rear of the main roll 5. The auxiliary roll 10 is provided in a shape having a circumferential surface portion facing approximately half of the lower side.

The auxiliary roll 10 may be configured as a cylindrical roll supported by a support shaft fixed to the frame 1 inclined parallel to the side surface c, but in this embodiment, the auxiliary roll 10 is configured as a conical roll. A swing arm 11 is constructed of a roll and extends rearward to the frame 1, and is pivoted so as to be able to move upwardly against a spring 12.
The auxiliary rolls 10, 10 of the masking mechanisms A, A on both sides are pivotally supported at the rear end via a common horizontal shaft, and both the auxiliary rolls 10, 10 also act as guide rolls guided along the protrusion a. I decided to do so.

To explain the effect, when the frame 1 is run on the workpiece a substantially along the projection b,
Each tape 3 is guided to each side c of the projection b from the winding frame 4 on each side above it, and the tape 3 is first guided to the pressure roll 5, ie, the main roll 5, in its forward position.
For example, as shown in FIG.
For example, as shown in FIG.
0 was applied so that the entire surface was pressed against the side surface c.

(Effects of the invention) As described above, according to the invention, when applying masking tape to the side surface of a protrusion, it is possible to prevent the tape from shifting downward from the side surface, and to apply the masking tape to the side surface over its entire length. can be applied uniformly, and by making the main roll made of an elastic material, the main roll can also have the function of adhering and bending the tape, thereby reducing the size and weight of the device. has.

[Brief explanation of drawings]

Fig. 1 is a side view of an example of the proposed device, Fig. 2 is a plan view thereof, Fig. 3 is a rear view thereof, Fig. 4 is a side view of the device in use, and Fig. 5 is an enlarged view taken along the - line. A sectional view, FIG. 6 is a side view, FIGS. 7 and 8
The figures are a - line and a - line cutaway view, and FIG. 9 is an oblique view of the workpiece in the masked state. 1...Frame, 2...Operation handle, 3...
Masking tape, 4... Winding frame, 5... Press roll, A... Masking mechanism, a... Work, b...
...Tsujo, c...side.

Claims (1)

[Scope of utility model registration request] This device applies masking tape to both upwardly sloping sides of a protrusion formed on a workpiece, and includes a frame having an operation handle, an upper winding frame that holds the masking tape in a manner that allows it to be unwound, and a frame that has an operation handle. A pair of left and right masking mechanisms, each consisting of a lower pressure roll that presses the masking tape drawn out from the winding frame onto the workpiece, are provided on both sides, and the pressure rolls of each masking mechanism are connected to each of the protrusions. The main roll is formed in a shape having a main roll pivotally supported on the frame so as to face the side ridges, and a circumferential surface portion facing approximately half of the lower side of each side of the protrusion, and the main roll is mounted on the frame. and an auxiliary roll pivotally supported at a further rear position. 1. A masking device comprising a cylindrical roll made of an elastic material that is elastically deformed so as to come into contact over approximately half of the roll.